Tuesday, 18 June 2013
Bellevue Ballroom (The Hotel Viking)
The geometry of the wave normal curves for Rossby waves in the presence of winds plays an important role in describing the radiation pattern generated by a time harmonic, spatially compact source. The Doppler shifted frequency not only distorts the classical Longuet-Higgins offset wave normal circle but also introduces a new branch consisting of a plane with a bump corresponding to waves convected with the wind. The method of stationary phase demonstrates that the reciprocal polar to these curves provides the radiation patterns. We present a number of these interesting patterns for the cases of zonal and meridional winds.
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